Battery of a mobile device



FIG. 1 is a top plan view of a battery of a mobile device showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side view thereof.

The broken lines shown in FIGS. 1–6 are included for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a battery of a mobile device, as shown and described. 